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1. 发明授权

US4325262A Apparatus for measuring liquid flow 失效
标题翻译：液体流量测量装置
公开(公告)号：US4325262A
公开(公告)日：1982-04-20
申请号：US156334
申请日：1980-06-04
申请人： Claudio Meisser , Hans Strasser , Hubert Lechner
发明人： Claudio Meisser , Hans Strasser , Hubert Lechner
IPC分类号： G01F1/66
CPC分类号： G01F1/662
摘要： An apparatus for ultrasonically determining fluid flow passing through a measurement section includes a tube which has two ends and an average predetermined inner cross-sectional area; the tube constitutes the measurement section. A sound-emitting transducer is disposed near one end of the tube, which has a first sound-transfer surface, and a sound-receiving transducer disposed near the other end of the tube, which has a second sound transfer surface. Each sound transfer surface is disposed at a sufficiently large predetermined distance from a corresponding end of the tube, so as to permit the fluid flowing through the tube. A fluid-receiving chamber communicates with the one end of the tube, and has a first average cross-sectional area, and a fluid-discharge chamber communicates with the other end of the tube, and has a second average cross-sectional area. The tube extends through the chambers, and each of the first and second cross-sectional areas exceeds the inner cross-sectional area by a factor of at least two. At least one of the chambers surrounds a corresponding end of the tube along at least a portion of the tube exceeding the average inner width thereof.
摘要翻译：用于超声波确定通过测量部件的流体流动的装置包括：管，其具有两端和平均预定的内部横截面积; 管构成测量部。声发射换能器设置在管的一端附近，其具有第一声音传送表面和设置在管的另一端附近的具有第二传声表面的声音接收换能器。每个声音传送表面设置在与管的相应端部足够大的预定距离处，以允许流体流过管。流体接收室与管的一端连通，具有第一平均横截面积，流体排出室与管的另一端连通，并且具有第二平均横截面积。管延伸穿过腔室，并且第一和第二横截面区域中的每一个超过内部横截面积至少两倍。至少一个腔室沿着管的至少一部分超过其平均内部宽度围绕管的相应端部。

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